双胞胎Tatton-Brown-Rahman DNMT3A过度生长综合征的家族性肺胸病
Sarju G Mehta1, Simon Holden2, Judith Babar2
1Cambridge University Hospitals NHS Foundation Trust, Cambridge Biomedical Campus, Cambridge, UK. sarju.mehta@nhs.net.
European journal of human genetics : EJHG
|February 25, 2026
概括
自发性肺胸炎可能表明遗传性疾病. 研究人员在双胞胎兄弟中发现了Tatton-Brown-Rahman综合征 (TBRS),扩大了该综合征的已知症状,并强调了基因测试的重要性.
科学领域:
- 遗传学 遗传学是一种遗传学.
- 呼吸系统医学 呼吸系统医学
- 罕见疾病 罕见疾病
背景情况:
- 自发性肺胸炎是一种常见的呼吸道问题,有时与遗传条件有关.
- 在家族性肺胸病例中,很大一部分仍然没有遗传特征.
- 塔顿-布朗-拉赫曼综合征 (TBRS) 是一种与DNMT3A相关的过度生长障碍,与肺胸发生未知关联.
研究的目的:
- 为了研究同卵双胞胎兄弟中自发性肺胸病的遗传基础.
- 为了确定塔顿-布朗-拉赫曼综合征 (TBRS) 是否与自发性肺胸炎有关.
- 扩大已知的TBRS.的表型谱.
主要方法:
- 研究了一对相同的双胞胎兄弟,他们患有复发性自发性肺胸病.
- 进行了全基因组测序,以确定遗传变异.
- 使用甲基化分析来评估DNMT3A的功能.
- 评估了包括身高,神经发育和心脏状况在内的临床特征.
主要成果:
- 在这两人身上都发现了一种罕见的新型DNMT3A误解变异 (p.D529N).
- 甲基化分析证实了全基因组的低甲基化,支持了该变体的致病性.
- 这些患者身材高大,轻度智力障碍,超运动性和心脏异常.
- 在已知的家族肺胸腺基因中没有发现任何变异.
结论:
- 这个病例将塔顿-布朗-拉赫曼综合征 (TBRS) 与自发性肺胸部联系起来,扩大了该综合征的表型.
- 这些发现表明,与TBRS相关的肺胸瘤中,可能存在一种涉及连接组织异常的机制.
- 对于肺胸部,高个体和神经发育特征的患者,建议对TBRS进行遗传评估.
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